. Better fruit. Fruit-culture. Page 4 BETTER FRUIT September, 1919. Rots starting from mechanical injuries, such damage can be eliminated aim truly judged until it is eaten—and whether it be fit to eat early or late in its season is dependent upon its "keep- ing ; Consider, then, some of the factors that influence the keeping quality of apples—factors that produce storage diseases. There are two general divisions of storage diseases: 1. Parasitic, or those caused by such organisms as bacteria and fungi, or molds. 2. Non-parasitic, or the so-called "physiological diseases
. Better fruit. Fruit-culture. Page 4 BETTER FRUIT September, 1919. Rots starting from mechanical injuries, such damage can be eliminated aim truly judged until it is eaten—and whether it be fit to eat early or late in its season is dependent upon its "keep- ing ; Consider, then, some of the factors that influence the keeping quality of apples—factors that produce storage diseases. There are two general divisions of storage diseases: 1. Parasitic, or those caused by such organisms as bacteria and fungi, or molds. 2. Non-parasitic, or the so-called "physiological ; Those in the latter class are frequently not regarded as diseases, but as "condi- tions," but call them what you will, they cause pathological abnormalities. Parasitic Diseases. The parasitic diseases may be classi- fied into two general groups: (1) Those which may be prevented by spraying and good orchard sanitation, and (2) Those which may be prevented by proper handling of the fruit. As an example of the first class we have the Northwestern anthracnosc. This dis- ease is confined to the Pacific North- west and is most serious west nf the Cascades. It is present to some extent in the White Salmon Valley, and it has. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Washington State Apple Commission. Hood River, Ore. , Better Fruit Pub. Co
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